Tropical Storm Yun-yeung
 Yun-yeung near its peak intensity as it neared Japan on September 7 | |
| Meteorological history | |
|---|---|
| Formed | September 4, 2023 |
| Extratropical | September 8, 2023 |
| Dissipated | September 9, 2023 |
| Tropical storm | |
| 10-minute sustained (JMA) | |
| Highest winds | 75 km/h (45 mph) |
| Lowest pressure | 998 hPa (mbar); 29.47 inHg |
| Tropical storm | |
| 1-minute sustained (SSHWS/JTWC) | |
| Highest winds | 85 km/h (50 mph) |
| Lowest pressure | 993 hPa (mbar); 29.32 inHg |
| Overall effects | |
| Fatalities | 4 |
| Damage | Unknown |
| Areas affected | Philippines, Japan |
| IBTrACS | |
Part of the 2023 Pacific typhoon season | |
Tropical Storm Yun-yeung, known in the Philippines as Tropical Storm Ineng was a weak tropical storm which affected Japan in early September 2023. The twentieth tropical depression and thirteenth tropical storm of the 2023 Pacific typhoon season, Yun-yeung originated in the Philippine Sea in early September. After exiting the Philippine Area of Responsibility on September 5, it developed into a depression the next day. On September 7, Yun-yeung would peak as a minimal tropical storm before making landfall in Southern Japan. It rapidly weakened once inland, and by September 9, had degenerated into a remnant low.
Despite being weak when affecting the Philippines and Japan, Yun-yeung still produced historical amounts of rainfall in Japan, causing floods and landslides to occur in Southern Japan. A total of three fatalities would be recorded, all in Chiba Prefecture.
Meteorological history[edit]
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Extratropical cyclone, remnant low, tropical disturbance, or monsoon depressionOn 6:00 UTC on September 4, the Joint Typhoon Warning Center (JTWC) began tracking a low-pressure area far east of Luzon.[1] Soon after, the Japan Meteorological Agency (JMA) began tracking the low-pressure area.[2] At the time, the disturbance was located in the Philippine Area of Responsibility (PAR), causing the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) to upgrade the system as a tropical depression, naming it Ineng.[3] On 18:00 UTC on September 5, both the JTWC and JMA recognized the system as a tropical cyclone, with the latter agency naming it Yun-yeung as according to them, it had gale-force winds at the time.[1][2]
The next day, the JTWC upgraded Yun-yeung into a tropical storm.[1] Later that day, the depression exited the PAR, causing PAGASA to cease advisories on the system.[4] Yun-yeung steadily intensified, and early on September 7, had peaked with 10-minute sustained winds of 40 knots (45 mph) according to the JMA.[2] Later that day, it peaked with 1-minute sustained winds of 45 knots (50 mph) according to the JTWC.[1] After making landfall in Southern Japan the next day, Yun-yeung rapidly weakened, and by September 9, had degenerated into a remnant low, causing both agencies to stop monitoring it.[1][2]
Preparations and impact[edit]
Philippines[edit]
When Yun-yeung was initially developing far from the Philippines, it with Haikui primarily enhanced the southwest monsoon, causing heavy rains in portions of Luzon.[4] Yun-yeung itself would cause scattered showers in Batanes, Abra, Apayao, Cagayan and Isabela.[5]
Japan[edit]
In the Chiba and Ibaraki prefectures, record rainfall would occur, with 371.5 mm (14.63 in) recorded in Mobara and 249.5 mm (9.82 in) in Kamogawa. Additionally, rides in the Tokaido Line, Uchibo Line and Gaibo Line were temporarily suspended.[6] Osaka recorded 323 mm (12.7 in) of rainfall. Due to the storm, nearly 10 thousand households had temporarily lost power in Japan. Around thirty-two flights would be cancelled due to the storm.[7] In Shinjuku Station, water leaked in an underground passage and flooded around 15 meters of walkway.[8] A total of three people died due to the storm.[9] Some train lines were impacted in the Kanto region, since JR East suspended some lines and limited express trains.[10]
References[edit]
- ^ a b c d e "Tropical Storm 12W (Yun-yeung) Best Track Data". National Oceanic and Atmospheric Administration. Retrieved 3 June 2024.
- ^ a b c d "YUN-YEUNG (2313) TROPICAL CYCLONE BEST TRACK". Japan Meteorological Agency. Archived from the original on 30 November 2023.
- ^ bochoa (2023-09-05). "LPA develops into Tropical Depression Ineng". Cebu Daily News. Retrieved 2024-06-03.
- ^ a b "'Ineng' exits PAR, but continues to influence 'habagat'". Philstar.com. Retrieved 2024-06-03.
- ^ "Ineng exits PAR but 'habagat' to bring rains in next 3 days". Philippine News Agency. September 6, 2023.
- ^ "Typhoon Yun-yeung weakens into tropical depression". Kyodo News+. 2023-09-08. Retrieved 2024-06-03.
- ^ EFE, Agencia (2023-09-08). "Tropical storm causes heavy rain, flooding in eastern Japan". EFE Noticias. Retrieved 2024-06-03.
- ^ "Tropical storm Yun-yeung approaching central Japan | NHK WORLD-JAPAN News". NHK WORLD. Retrieved 2024-06-03.
- ^ "Japan - Tropical Cyclone YUN-YEUNG, update (media, JMA, GDACS) (ECHO Daily Flash of 11 September 2023) - Japan | ReliefWeb". reliefweb.int. 2023-09-11. Retrieved 2024-06-03.
- ^ "Tropical Storm Yun-yeung brings heavy rain to Kanto region". September 8, 2023. Retrieved September 8, 2023.
External links[edit]
Tropical cyclones of the 2023 Pacific typhoon season | ||
|---|---|---|
 | ||
